67 lines
1.9 KiB
Rust
67 lines
1.9 KiB
Rust
extern crate lapp;
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extern crate unicode_normalization;
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use std::io::{BufRead, BufReader, BufWriter, Write};
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use unicode_normalization::UnicodeNormalization;
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// usize because that's the max number of bools in the slice
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fn trues(bools: &[bool]) -> usize {
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let mut n = 0;
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for b in bools {
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if *b { n += 1 }
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}
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n
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}
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fn main() {
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let usage = include_str!("../README");
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let args = lapp::parse_args(&usage);
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let infile = BufReader::new(args.get_infile("infile"));
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let mut outfile = BufWriter::new(args.get_outfile("outfile"));
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if args.get_bool("version") {
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println!("Version {} licensed GPLv3. (C) 2019 Leonora Tindall <nora@nora.codes>",
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env!("CARGO_PKG_VERSION"));
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std::process::exit(0);
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}
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let nfd = args.get_bool("nfd");
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let nfkd = args.get_bool("nfkd");
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let nfc = args.get_bool("nfc");
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let nfkc = args.get_bool("nfkc");
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let ss = args.get_bool("stream-safe");
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if trues(&[nfd, nfkd, nfc, nfkc]) > 1 {
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eprintln!("--nfd, --nfkd, --nfc, and --nfkc are mutually exclusive.");
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std::process::exit(1);
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}
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for line in infile.lines() {
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let mut line = line.expect("Could not read line from file. Error").clone();
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if args.get_bool("crlf") {
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line.push('\x0D');
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}
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line.push('\x0A');
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let normalized: Box<dyn Iterator<Item=char>>;
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if nfd {
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normalized = Box::new(line.chars().nfd());
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} else if nfkc {
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normalized = Box::new(line.chars().nfkc());
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} else if nfkd {
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normalized = Box::new(line.chars().nfkd());
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} else {
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normalized = Box::new(line.chars().nfc());
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}
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let output: String;
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if ss {
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output = normalized.stream_safe().collect();
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} else {
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output = normalized.collect();
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}
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write!(&mut outfile, "{}", output).expect("Could not write to output. Error");
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}
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}
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